121311031210 has 16 divisors (see below), whose sum is σ = 218804589792. Its totient is φ = 48425582800.

The previous prime is 121311031189. The next prime is 121311031211. The reversal of 121311031210 is 12130113121.

It is a happy number.

121311031210 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (121311031211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12348556 + ... + 12358375.

It is an arithmetic number, because the mean of its divisors is an integer number (13675286862).

Almost surely, 2^121311031210 is an apocalyptic number.

121311031210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121311031210 is a deficient number, since it is larger than the sum of its proper divisors (97493558582).

121311031210 is a wasteful number, since it uses less digits than its factorization.

121311031210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24707429.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 121311031210 its reverse (12130113121), we get a palindrome (133441144331).

The spelling of 121311031210 in words is "one hundred twenty-one billion, three hundred eleven million, thirty-one thousand, two hundred ten".